No, you are just not using the correct KUAL booklet package.
The message:
Package 'Update_KUALBooklet_v2.7_install.bin' (KUALBooklet v2.7 I) is not targeting your device
Means exactly what it says.
Where did you get the KUAL archive that contained the package you where trying?
Try the one found here:
https://www.mobileread.com/forums/sh...d.php?t=225030
Try that one and report back.
Why did you take apart the Update_jailbreak_hotfix_1.14_nomax_install.bin ?
Just install the entire package.
It is a special packaging, does not require MrPI, put at highest visible level of USB storage, then use UYK.